A failed Quinn Martin pilot for a series starring a Hawaii-based government counter intelligence agency run by the indomitable Aunt Mary. In this, his only adventure, Diamond Head has to prevent the evil Tree from stealing a deadly nerve toxin gas and selling it to foreign powers. To help Diamond Head is the Dragon Lady and Zulu.
Acting
Ian McShane's triple-role commitment deserves a medal.
Production
Every establishing shot screams 'we got airline discounts.'

Director
Jeannot Szwarc
Trivia, insights & behind the scenes
Quinn Martin produced 16 failed pilots in the 70s; this is arguably the most watchable disaster. Szwarc later directed Jaws 2 and Supergirl, proving failure is a stepping stone.
The 'Dragon Lady' name and Zulu's actual name being 'Zulu' reflect peak 70s orientalism; France Nuyen was fresh off Star Trek's 'Elaan of Troyius' playing another exoticized role.